Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash flows from operating activities:
Net income	$ 5,234	$ 6,900
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	1,446	1,744
Amortization and change in contingent consideration	8,532	5,175
Stock-based compensation	1,674	1,199
Revaluation of warrants	(381)	59
Loss on disposal of fixed assets	24	6
Payment of contingent consideration in excess of initial measurement	(2,453)
Provision for doubtful accounts	13	126
Deferred taxes	2,527	195
Changes in operating assets and liabilities:
Accounts receivable	(1,343)	(4,108)
Prepaid expenses and other current assets	(2,514)	(3,263)
Other assets	8	124
Accounts payable and accrued expenses	(159)	(1,876)
Customer obligations	2,160	12,246
Other liabilities	833	(14)
Net cash provided by operating activities	15,601	18,513
Cash flows used in investing activities:
Purchases of property and equipment	(6,403)	(4,057)
Cash consideration for business acquisitions, net of cash acquired	8,551	(1,852)
Change in restricted cash	574	(200)
Net cash (used in) provided by investing activities	2,722	(6,109)
Cash flows from financing activities:
Proceeds from debt	29,659	9,219
Proceeds from initial public offering net of underwriters commissions and discounts	62,566
Proceeds from exercise of common stock	8	37
Payment of contingent consideration	(3,807)	(2,000)
Purchase of treasury stock	(30)	(21)
Net cash provided by financing activities	88,396	7,235
Net increase in cash and cash equivalents	106,719	19,639
Cash and cash equivalents at beginning of period	154,621	104,280
Cash and cash equivalents at end of period	261,340	123,919
Cash paid during the period for:
Interest	464	127
Taxes	486	48
Noncash financing and investing activities:
Accretion of redemption premium	2,301	5,692
Reduction in FBM contingent consideration due to re-negotiated lease	528
Conversion of preferred stock to common stock	118,417
Conversion of preferred stock warrants to common stock warrants	$ 737